It turns out that some DACA approved DREAMers are exploiting a loophole in the law to erase the entry without inspection mark on their immigration history. This is how they are successful in doing it:
- Fabricate an excuse to travel overseas for humanitarian reasons (e.g. it is common in most poor countries to bribe medical professionals to furnish fake medical documents for a sick individual, even if the person never existed or has been dead for decades, apparently sick grandparents are popular relatives).
- File for advanced parole (USCIS Form I-131).
- After approval travel abroad.
- Enter the US legally at a border checkpoint (airport or land crossing), present a valid passport, AP paperwork, and be legally admitted to the US (a valid I-94 is now available).
- File for adjustment of status within the US
If you still wish to proceed, get your paperwork before leaving (while you will not need the AP documents to leave the US, if you leave without an approval in hand, and then find out overseas that your application is denied, you will not be able to return), have a valid passport with you before leaving (you will need it to enter your country if flying, unless it is Mexico where you can simply cross the border) because you will need it to enter the US and your passport will then be stamped by the border agent, and then come back within the time indicated on the AP. At the origin airport, you will be cleared to leave if you have a valid passport and AP paperwork. While clearing immigration in the US, be prepared for questioning by the agent.